so natural, you can see birds and be in complete wilderness. i really like that about this. you could maybe get a little snapshot of what they are expecting. >> it is an interactive, keck sculpture that is interacted with by the visitor. >> they are a lot about and they fall down the belt. it moves the belt up, and if you turn that faster, the butterflies fall in the move of words. >> the art reflect the commission's commitment to acquiring the best work from the bay area and beyond. in addition to the five new commissions, 20 artworks that were already in the airport collection were reinstalled.